The world mourns the loss of Dame Maggie Smith, a towering figure in the performing arts, who passed away peacefully at 89, surrounded by loved ones.

London, Jan 21: Emma Watson had `no idea' who Dame Maggie Smith and Gary Oldman were before she started working with them on the Harry Potter movies.

The British star - who shot to fame playing Hermione Granger, one of three starring roles in the popular film franchise - grew up in an academic family and barely watched movies.

And the 18-year-old insists she wasn''t starstruck when she first set foot on the Potter set - because she didn''t recognize most of her distinguished co-stars.